HM-10 based on CC2541

HM-10 is a Bluetooth Low Energy (BLE) module based on the CC2541 chip. It can operate with a supply voltage from 3.3V to 6V. Communication is handled via a UART serial interface using AT commands supported by the CC2541. This makes the module ideal for use with Arduino, ESP8266, and even Raspberry Pi (if you happen to need a second BLE module).

These are modules sourced directly from Huamao Tech. The HM-10S-A supports Bluetooth 4.0 (BLE). In addition to serial communication, it also allows remote reading of analog values from the module’s GPIO pins.

The set includes not only the HM-10S-A module itself but also an adapter board. The adapter has pre-tinned pads required for operation (the remaining markings on the silkscreen are only visual and do not represent actual pads). The module can be easily soldered onto the adapter using a standard soldering iron (hot-air is not required). Simply place the module on the adapter and solder one pad with a small amount of solder. If alignment correction is needed, it can be done by reheating that joint. Once you are sure the module is properly positioned, solder the remaining pads.

The included adapter features a built-in voltage regulator. It also provides an additional pair of GND and 3V3 pins that can be used to power sensors or other external devices.

Replacements

This module is essentially a sibling of the HM-10 module already available in our offer. The differences are:

• HM-10S-A is delivered as separate components (SMD module + adapter). If you need minimal size, the SMD version may be more suitable. However, you will need to solder it yourself (which is not difficult) to use it with the adapter.
• Even when soldered, the module with the adapter is slightly smaller than MOD-1441.
• MOD-1441 has all HM-10S IO pins broken out on the adapter, making wire soldering easier.

We have also HM-11 module from this series – it is even smaller than the HM-10.

Specification:

• Model: HM-10S-A
• Firmware version: V610
• Chip: CC2541
• Supply voltage: 3.3V to 6V
• Current consumption: <20mA
• Standard: Bluetooth 4.0 BLE
• Range: up to 10 m
• Communication: UART serial
• Dimensions:
  • SMD module: 27 x 13 mm
  • Module with adapter: 35 x 17 mm (without pin headers)